The Application of an Innovative Reactive Agility Testing System for Assessment in Older Adults With Dynapenia

NCT07375888 | Completed

• 1 other identifier: KMUHIRB-E(I)-20250028
• Study Type: observational
• Target: 104
• Locations: 1 country
• Sites: 1

Brief Summary

Before the experiment, the researchers explain the purpose and procedures to the participants. After signing the informed consent form and completing basic personal information, participants perform a 5-minute warm-up. They then practice the test procedure 1-3 times to become familiar with the visual stimuli, followed by a 3-minute rest before the formal experiment. Body composition and physical performance are assessed using handgrip strength, the five-time sit-to-stand test, and the skeletal muscle mass index. Fall risk is evaluated using a localized fall risk awareness questionnaire. Agility is tested using a reaction-based running task. Participants stand in a 1 m × 1 m preparation area, and one of two sensor lights placed 3 meters away lights up randomly. Participants run forward, pass through a photo gate, and touch the light to turn it off. Decision time, movement time, and total time are recorded over 10 trials.

Conditions

Dynapenia

Keywords

Dynapenia; Elderly

Outcome Measures

Primary Outcomes (2)

• Decision time

  The system records the time from when the light turns on to when the participant passes through the photo gate, which is defined

  From participant enrollment to the end of testing

• movement time

  The time from passing through the photo gate to touching and turning off the sensor light

  From participant enrollment to the end of testing

Secondary Outcomes (3)

• Handgrip Strength

  From participant enrollment to the end of testing

• Five-Time Sit-to-Stand Test

  From participant enrollment to the end of testing

• Skeletal Muscle Mass Index (SMI)

  From participant enrollment to the end of testing

Study Arms (4)

Healthy Elderly

Normal muscle mass Normal muscle strength Normal physical performance

Diagnostic Test: Reactive Agility Testing System

Pre sarcopenia

Low muscle mass Normal muscle strength Normal physical performance

Diagnostic Test: Reactive Agility Testing System

Sarcopenia

Low muscle mass Low muscle strength or low physical performance

Diagnostic Test: Reactive Agility Testing System

Dynapenia

Normal muscle mass Low muscle strength or low physical performance

Diagnostic Test: Reactive Agility Testing System

Interventions

Reactive Agility Testing System DIAGNOSTIC_TEST

The participant stands in the preparation area located at the center of the testing field, which measures 1 m × 1 m. One sensor light is placed on each side, with each light positioned 3 meters away from the preparation area. After the system is activated, one of the lights will illuminate randomly between 1 and 5 seconds. Once the light turns on, the participant moves forward quickly, passes through a photo gate next to the preparation area, and continues forward until touching the sensor light to turn it off. The system records the time from when the light turns on to when the participant passes through the photo gate, which is defined as the decision time. The time from passing through the photo gate to touching and turning off the sensor light is defined as the movement time. After completing five trials on each side, the test ends. Finally, the system calculates the total time, which is the sum of the decision time and movement time.

Dynapenia; Healthy Elderly; Pre sarcopenia; Sarcopenia

Eligibility Criteria

• Age: 65 Years - 80 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Older Adult (65+)
• Sampling Method: Probability Sample

Study Population

Community-dwelling older adults aged 65 years and above Able to communicate with the researchers through spoken or written language Able to cooperate with all required assessments

You may qualify if:

• Community-dwelling older adults aged 65 years and above
• Able to communicate with the researchers through spoken or written language
• Able to cooperate with all required assessments

You may not qualify if:

• Individuals with cognitive impairment
• Individuals who experience chest pain during recent exercise
• Individuals with angina or joint pain
• Individuals with congestive heart failure
• Individuals who have been advised by a physician not to exercise
• Patients with cancer currently receiving chemotherapy or radiotherapy
• Individuals with neuromuscular disorders or musculoskeletal injuries involving the ankle, knee, or hip joints

Sponsors & Collaborators

• Kaohsiung Medical University: lead

Study Sites (1)

Kaohsiung Medical University

Kaohsiung City, 807, Taiwan

Location

Study Design

• Study Type: observational
• Observational Model: CASE CONTROL
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: January 14, 2026
• First Posted: January 29, 2026
• Study Start: November 24, 2025
• Primary Completion: December 24, 2025
• Study Completion: December 24, 2025
• Last Updated: January 29, 2026

Record last verified: 2026-01

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL, SAP, ICF, CSR, ANALYTIC CODE
• Time Frame: De-identified individual participant data (IPD) and supporting information will be available starting 2 years after the publication of the primary study results and will remain accessible for 5 years.
• Access Criteria: The related supporting documents will only be made available to qualified researchers affiliated with academic institutions, medical organizations, or public health agencies, Applicants must submit a detailed research proposal and ethical approval documents, and access will be granted only upon approval.

Locations

TW (1)